光环 (guānghuán) means 'halo' or 'ring of light.' In astronomy, it refers to the rings around planets like Saturn. It can also be used figuratively to describe a glowing aura or distinguished reputation surrounding a person or thing.
土星的光环是太阳系中最壮观的。
Tǔxīng de guānghuán shì tàiyángxì zhōng zuì zhuàngguān de.
Saturn's rings are the most spectacular in the solar system.
他头上的冠军光环让人羡慕不已。
Tā tóu shàng de guànjūn guānghuán ràng rén xiànmù bùyǐ.
The champion's halo on his head makes people very envious.
透过望远镜可以看到土星美丽的光环。
Tòuguò wàngyuǎnjìng kěyǐ kàndào Tǔxīng měilì de guānghuán.
Through a telescope, you can see Saturn's beautiful rings.